your answer is C. Peripheral nervous system (PNS)
The second line of defence is a group of cells, tissues and organs that work together to protect the body. This is the immune system.
When a pathogen (disease-causing organism) invades the body, the neutrophils gather at the entry site and try to engulf it and destroy it.
A T helper cell will recognise only one pathogen. If the T helper cell recognises the invader, it will immediately clone to increase numbers.
After a few days of fighting off the pathogen, you will recover from your infection.
ment, social development, and the five senses. In each cell of the table, list an appropriate skill or learning that takes place during that month. Then, design a toy that would help the baby learn a critical skill for each of the twelve months. Describe what the toy looks like (for example, size, colors, if it makes sounds) and why you designed it the way you did.
